Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7541967 | Sounding transformation and recognition | Jan J. Sojka, Donald C. Thompson | 2009-06-02 |
| 5062449 | Vibration dampener for direct acting pressure regulator | David E. Woollums | 1991-11-05 |
| 4972868 | Flow restrictor and diverter for direct acting pressure regulator | David B. Davis, David E. Woollums | 1990-11-27 |
| 4972871 | Boost modified, droop compensated direct acting pressure regulator | Mark E. Hood | 1990-11-27 |
| 4889158 | Pressure/flow compensated direct acting pressure regulator | James C. Hawkins, Stanley D. Hall | 1989-12-26 |
| 4842013 | Droop compensated direct acting pressure regulator | Mark E. Hood | 1989-06-27 |